Corral or Pen
A pen is an enclosure for domestic animals. The most common types of pens are pigpens, horse paddocks, cattle pens, and sheep pens.
A large pen for horses is called a paddock (USA, UK) or a corral (Western USA), a borrowing from the Spanish language. A small pen for horses (no more than 15-20 feet on any side) is a stall if inside a barn or stable, or
simply a "pen" if it lacks any roof or shelter. The term paddock is sometimes used interchangeably with pasture in Australia.
A cattle pen is also sometimes called a corral.
In Australia and New Zealand a pen is a small enclosure for livestock (especially sheep or cattle), which is part of a larger construction, eg. calf pen, forcing pen (or yard) in sheep or cattle yards, or a sweating pen or catching pen in a shearing shed.
A sheep pen is also called a folding, sheepfold or sheepcote. Modern shepherds more commonly use terms such as closing or confinement pen for small sheep pens. Most structures today referred to as sheepfolds are ancient dry stone semicircles. Constructions of pens vary, depending on purpose, animal type, and culture. Primitive pens in South Africa are called kraal.